Okay, after searching around i figured out that the Oem air box seems to be far superior over a regular CAI. Right now i have a regular CAI with NO heat sheild and was wondering if i should purchase this used one i found on ebay for $75. I would also purchase a K&N drop in filter to go along with it.
I have a 2004 6mt nearing 80k miles. I have the kinetix V+ Plenum, Megan cats, and HKS rep exhaust.

Also, do they sell new piping that would work with the stock air box?

http://www.ebay.com/itm/350z-OEM-Air-Intake-Box-Mint-/221327393867?pt=Motors_Car_Truck_Parts_Accessories&hash=item338824044b&vxp=mtr
Link^^

 

get the revup airbox from the 06 models. there are many options for the intake tube. thezstore sells a carbon fiber one. z1 sells their own tube iirc. stillen has a tube. or you can just use the oem black intake tube.

but yes, 06 airbox with k&n filter is best.

 

Okay sounds good. I guess i'll just wait to see when an 06 box pops up and get that one.
Thanks for the info!

 

Also, anybody know the part# for the 06 airbox?

 

I've got a stock air box off a 03,along with ALL the OEM piping.
Sell to you for $75 SHIPPED.
PM me.

 

I want '06 :3

 

I've also been looking for an 06 airbox, is there a way to modify the 03 airbox to "act" like an 06? I have no experience in venturi rings and velocity stacks, etc.